JP2000221875A - Map display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a retrieval efficiency by scrolling a distance corresponding to a distance between a reference position and a mouse point in the direction from the reference position toward the mouse point on a screen displaying a map. SOLUTION: This device indicates a scrolling target P by a mouse cursor on a map being displayed, calculates a distance between the original point and the indicated point P, takes out a scrolling ratio K, and calculates an actual scrolling amount R decided by the ratio K and a distance (r) between O and P. If the device contains a map of a display area after the map is scrolled to a position P1, the mouse cursor arrow is changed so as to match with the scrolling direction. The scrolling distance R is compared with specified reference values R1, R2, and if R>=R2, a small size character layer is omitted from a scrolling target, and if R1<R<R2, large and middle size character layers are targeted for scrolling, and if R1>=R, all character sizes are targeted for scrolling without character omission. The display area is shifted (scrolled) according to this result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a map display device which can perform scrollable control.

[0002]

2. Description of the Related Art There is a map display device that displays a map by structuring various maps in layers (layers) and designating the layers. In the layer structure, a map for each prefecture, a map for each municipality, a road map, a house map, an underground mall map, and the like are layered according to types and scales. At the time of display, one or a plurality of layers are selected and displayed in an overlapping manner as necessary. For example, by combining a road map layer and a house map layer, a combination map of roads and houses is displayed. In many cases, a layer corresponds to one memory plane, or a memory area is divided by layer data division and treated as a layer.

[0003]

The size of the map is larger than the size of the display screen, and a map having a size corresponding to the display size is read out (cut out) from the map and displayed. When the user wants to find a specific place in the map, the user searches for or instructs a map of a target place while moving the map on the display screen. This is the scrolling of the map. The scrolling of the map is performed by setting a specified position on the screen (for example, the upper and lower end positions) as a click position for scrolling, and clicking the position with a mouse cursor. The scroll direction is generally up, down, left and right. If you can scroll in more directions than just up, down, left and right, it is convenient to search for maps. This is because the map itself extends not only up, down, left, and right, but also in various oblique directions. For example, information that is arranged vertically and horizontally, such as a character dictionary other than a map, may be displayed vertically, horizontally, but on a map, scrolling in various oblique directions is convenient for searching.

[0004] On the other hand, there is a problem with the amount and speed of scrolling. In the conventional scroll, it is not possible to specify a scroll moving amount (moving distance moving speed). If such a moving amount (moving speed) can be designated, the scroll operation becomes more convenient.

[0005] An object of the present invention is to provide a map display device capable of diversifying such scrolling.
It is a further object of the present invention to provide a map display device in which the moving distance (moving speed) of the scroll can be variously changed according to the state of the scroll to improve the search efficiency. It is a further object of the present invention to provide a map display device capable of omitting characters and the like in accordance with the scroll moving speed and reducing the amount of processing information.

[0006]

According to the present invention, there is provided a map display apparatus for scrolling in a direction from a reference position to a mouse point on a screen displaying a map by a distance corresponding to a distance between the reference position and the mouse point. Is disclosed.

Further, according to the present invention, after a scroll and / or a scroll destination is determined, a mouse cursor having an arrow in the scroll direction is displayed on a line connecting the reference position and the mouse point or at a position near the mouse cursor. Is disclosed.

Further, the present invention provides a method for displaying a map on a screen,
After scrolling in the direction from the reference position to the mouse point by a distance corresponding to the distance between the reference position and the mouse point, after the scroll direction and / or the scroll destination is determined, an arrow is directed in the scroll direction. Disclosed is a map display device in which a mouse cursor is displayed on a line connecting a reference position and a mouse point or at a position near the line to scroll the map.

Further, according to the present invention, an arrow mark indicating a scroll direction is displayed for each of a plurality of scroll direction sections divided at an equal angle around a reference position, and a section to which a mouse point belongs is determined. Disclosed is a map display device that displays an arrow mark indicating a scroll direction corresponding to the determined division on a line from a reference position toward a mouse point or at a position near the mouse point.

Further, the present invention provides a method for displaying a map on a screen,
In the direction from the reference position to the mouse point, scrolling is performed by the distance corresponding to the distance between the reference position and the mouse point, and in accordance with the distance, scrolling of the smaller character size layer is performed as the distance increases. A map display device to be omitted is disclosed.

Further, according to the present invention, there is provided a display means for selecting one or a plurality of layers from a map having a layer structure stored in a memory and displaying the selected map on a display screen as a map, and a scroll destination by a mouse cursor on the display screen. Means for designating, a mark indicating the scroll direction on the display screen at the mouse cursor position or a related position obtained therefrom, and scrolling a map to be displayed at the mouse cursor position or the related position. Means,
A map display device comprising:

Further, according to the present invention, there is provided a display means for selecting one or a plurality of layers from a map of a layer structure stored in a memory and displaying the selected map on a display screen, and a scroll destination by a mouse cursor on the display screen. Means for designating, a mark indicating the scroll direction on the display screen at the mouse cursor position or a related position obtained therefrom, and scrolling a map to be displayed at the mouse cursor position or the related position. Along with
Disclosed is a map display device including: a scroll unit that performs scrolling except for a layer having a small character size to be scrolled as the distance between a reference position on a display screen and a mouse cursor position or a related position increases.

[0013]

FIG. 1 shows an example of an overall processing flowchart of the present invention. There is map data stored in memory on a layer basis. For example, one layer is stored in one memory plane, or the memory is divided into layers. It is assumed that one or two or more selected map layers are extracted from the memory and displayed on the screen. In the flow F1, a scroll destination P is indicated on the displayed map by a mouse cursor on the screen.
The pointing points are called mouse points. The scroll destination P may be any position on the screen determined by the direction and position to scroll. The flow F2 is based on the origin and the designated point P
Is calculated. The origin is the lower left point of the drawing or the center position of the drawing, and can be arbitrarily selected. In this example, the center of the map being displayed, that is, the drawing center position 0 is set as the origin.

A scroll mark indicating which direction to scroll is displayed at a relevant position related to the mouse point, for example, at a specific position on a straight line connecting the reference point and the mouse point. Flow F realizes one such example.
3, F4 and F6. In a flow F3, a scroll ratio K set in advance is extracted. The flow F4 calculates an actual scroll amount (moving distance or moving speed) R determined by the ratio K and the distance r between the OPs. The scroll amount R is a distance between one point P ₁ and 0 on a straight line connecting the OPs. The calculation formula is, for example, as follows.

If the [number 1] a R = K · r K = 1 , R = r (P 1 point is the point P), K =
If 0.5, R = 0.5r (P _{1 at} the middle position between OPs)
Is set). The distance r between the OPs is the center position 0
Δx in the horizontal (x) axis direction and Δy in the vertical (y) axis direction
If the position is

Calculated as r = (Δx ² + Δy ² ) ^1/2

Here, the concept of scrolling in the present invention will be described with reference to FIG. The display map G ₁ before scrolling, an example of obtaining a map G ₂ separate position by performing scrolling in FIG. In this case, the scroll target P by the mouse cursor, an instruction on the display map G _1. When the center position 0 of the displayed map a reference point, and scroll to the position P refers to the processing up to the display center position of the same size and the map G ₁ is Show find a map G ₂ as a P. However, in actuality, not the position P but the OP
Is the position to scroll to a point P ₁ of a straight line connecting between. Position P ₁ is the center position of the map display G _2. P ₁ is determined by the scroll ratio K. Then, the actual scrolling distance is the distance R between 0P ₁ (speed).

[0016] The flow F5 is, to check whether or not there is a map of the display area after scrolling to the position P _1. If not, the scrolling is practically impossible, so the process ends. If there is, the mouse cursor arrow is changed so as to match the scroll direction in flow F6. An explanatory diagram of this change is shown in FIG.

FIG. 2 is an explanatory diagram of selecting and setting one of 16 scroll directions by using the mouse cursor arrow at the position of the mouse point during scrolling. It is automatically determined to which of the 16 directions the mouse point P specified in the flow F1 belongs by using an arithmetic means such as a personal computer. As a result of the determination, P ₁ is, for example, if the position in the section of # 15, the arrow of the mouse cursor position P, automatically, instead of the mark of the original mouse cursor, arrow M ₁₅ Segment 15 Change to #
As long as it is within 1 of the division, to change to the arrow M ₁

The 16 mouse cursor marks can be stored in the memory as image marks or in a software manner in which mark data is formed each time corresponding to a section. Either can be adopted. Then, when the section to which the mouse point P belongs is determined, the corresponding mark is read from the memory in the former manner and the mark is displayed at the P position. In the latter manner, mark data is formed by software and the mark data is formed at the P position. Display the mark. The size of the mark may be the same as or different from the original mouse cursor mark. It can also be realized by rotating the mark used as the original mouse cursor.

[0019] An example of M ₁₅ in FIG. 3. To the point P in FIG. 3 (a), R = K · r a position P ₁ by adding the percentage K is set, in this position P ₁ without classification on the position P is the original mouse point the arrow M ₁₅ of # 15 to display as the mouse cursor scroll direction mark. An example of the display is shown in FIG. Further, if the bin # 1, instead of the horizontal direction of the mark, the mark M ₁ showing a right 45 ° direction in bin # 1 is displayed on the point P. Thus, by observing the marks M ₁₅ and M ₁ after the change, the scroll direction can easily know whether intended to be scrolled in any direction within the 15 segment. Also, the position P
Rather, there is also a way to display the M ₁₅ and M ₁ to position P _1.

In a flow F7, the scroll distance R obtained in the flow F4 is compared with specified reference values R ₁ and R ₂ . FIG. 4 shows a setting example of R ₁ and R ₂ . Screen center 0 to 2
Consider a circle having _two diameters R ₁ and R ₂ , and check where the distance R is located. This is because the amount of information to be scrolled is reduced according to the magnitude of the distance R, and the actual scroll speed is increased.

This will be described. Characters of various sizes exist in the map. For example, in the case of a municipal map, the name of "city" is the largest size, and then the characters are gradually smaller in size, such as "o town", "o chome", and "o address". Such characters having different sizes are also layered on the memory according to the size of the characters. Therefore, in the map displayed including the town, the street, and the address, the layer of the town name, the layer of the street, and the layer of the address are read from the memory at the same position and are displayed in an overlapping manner.
As a result, a map that specifically displays the town-chome-address is obtained on the screen. On the other hand, in the case of scrolling, it is common to uniformly perform scrolling on all layers used for the display of a currently displayed map. In the present invention, depending on the magnitude of the scroll distance (speed) R, when R is large, scrolling of all layers is not performed, and scrolling of a layer having a small character size is omitted. As a result, data to be scrolled can be reduced, and the scroll speed can be substantially increased. The scroll distance (speed) R
When is large, there is no visual problem if the small-sized character layer is omitted from scrolling. Hereinafter, a specific example will be described.

[0022] (1), if R ≧ R _2, since the amount of scrolling is large, in the character, small characters of the layer sizes are removed from the scroll target (flow F10).
For example, the size is divided into large, medium, and small sections, and R>
If R _2, in, the segment size of the small layer removed from the scroll target (flow F10). (2) If R ₁ <R <R ₂ , since the scroll movement amount is an intermediate value, only the small-size character layer is omitted from the large, medium, and small sizes, and the large and medium sizes are omitted. The layer having the character size of is set as a scroll target (flow F9). (3) If R ₁ ≧ R, since the moving distance is short, characters are not omitted, and the entire character size is set as a scroll target (flow F8).

In the flow F11, the display area is moved (ie, scrolled) according to the results of the flows F8 to F10. At this time, since character layers of all sizes are to be scrolled with respect to the flow F8, during scrolling, large, medium, and small characters are sequentially displayed and scrolled on the display screen. For the flow F9, the small-size character layer is displaced from the scroll target, and large and middle characters are displayed one after another. For the flow F10, only the large characters are displayed one after another without the middle and small characters. .

The above scroll is performed by scroll means. The scroll means may be implemented by software, or may be implemented by hardware. Then, when scrolling, if it is excluded from the data to be scrolled depending on the size of the character size, it means omission. Although the scroll position P ₁ was be determined by K, without these proportions K, there is an example to scroll to the mouse pointer P. Also, OP
There is also a way to display at a nearby position instead of on the upper line.

When the scroll is completed, the large, medium, and small character layers are all displayed on the display screen without being omitted. That is, omission is controlled according to the magnitude of the distance R only during scrolling. If the screen is fixed after scrolling, all necessary character sizes are displayed according to the selected layer without omission. Because

FIG. 5 shows such character size and distance (speed).
It is a list chart which shows abbreviated relation with R. FIG. 6 shows a simulated state when the origin is set to the lower left position of the screen and the scroll is performed to the vicinity of the vertex in the diagonal right direction of 45 °. At the start of movement, large, medium, and small character sizes are displayed. During scrolling (moving), the distance R is large, so that medium and small character sizes are omitted, and only large size characters are scrolled. Then, after the scroll is completed, the large, medium, and small character sizes are all displayed on the map.

FIG. 8 shows a run type system diagram of the map display device. CPU 100, main memory 101, auxiliary memory 102, map recording medium 10
3, CRT 104, mouse 105, keyboard 106,
A storage medium input unit 107 such as a floppy disk is connected to each. The user inputs map display software from the input unit 107. The medium 103 stores various maps, and is executed by the CPU 10 by software via the input unit 107.
0, MM101, auxiliary memory 102, keyboard 1
06, the input operation of the mouse 105 and the dialogue with the screen of the CRT 104 realize the flow as shown in FIG.

In the above description, the character size is an example of the layer structure. Even on these maps,
This can be realized by performing control corresponding to the character size. In addition to the example in which the scroll destination P is indicated by the mouse point, the present invention can be applied to an example in which the scroll destination P is indicated by a keyboard or software.

Although the arrow mark is used in 16 sections, the mark may not be in accordance with such a section, but the scroll direction mark may be displayed so as to be directed in that direction instead of the section if the scroll direction is determined. It is. As a result, scroll marks in all directions from 0 ° to 360 ° can be displayed.

[0030]

According to the present invention, a variety of scroll directions and a rapid scroll can be achieved. In addition, easy-to-use scrolling was realized.

[Brief description of the drawings]

FIG. 1 shows an example of a flowchart of the present invention.

FIG. 2 is a diagram showing scroll direction marks by 16 divisions.

FIG. 3 is a diagram showing a relationship between a designated point P by a mouse cursor and an actual scroll destination position and an example of scroll direction mark display at that time.

FIG. 4 is a diagram showing reference distances R ₁ and R ₂ from a center point of a display map.

FIG. 5 is a diagram showing the omission of a scroll distance and a character size.

FIG. 6 is an explanatory diagram of omission of a character size associated with scrolling.

FIG. 7 is a diagram illustrating scrolling.

FIG. 8 shows systems of a map display device.

[Explanation of symbols]

 Reference Signs List 100 CPU 101 MM (main memory) 102 auxiliary memory 103 map storage medium

Claims (7)

[Claims] 1. A map display device that scrolls a distance corresponding to a distance between a reference position and a mouse point in a direction from a reference position to a mouse point on a screen displaying a map. 2. After a scroll direction and / or a scroll destination is determined, scrolling is performed by displaying a mouse cursor having an arrow in the scroll direction on a line connecting the reference position and the mouse point or at a position in the vicinity thereof. A map display device to be displayed. 3. Scrolling in a direction from the reference position to the mouse point on the screen displaying the map by a distance corresponding to the distance between the reference position and the mouse point, and the scroll direction and / or scroll destination is determined. And a mouse cursor having an arrow pointing in the scroll direction is displayed on or near a line connecting the reference position and the mouse point to perform scrolling. 4. An arrow mark indicating a scroll direction is displayed for each of a plurality of scroll direction sections divided at an equal angle around a reference position, a section to which a mouse point belongs is determined, and the determination is made. A map display device, wherein an arrow mark indicating a scroll direction corresponding to a section is displayed on a line from a reference position to a mouse point or at a position near the mouse point. 5. A map display device which has one or more layers to be displayed, which is stored in a memory and has a layer divided by a character size and a layer determined by a scale and a type, and displaying the selected layer as a map. On the screen on which the map is displayed, scroll in the direction from the reference position to the mouse point by a distance corresponding to the distance between the reference position and the mouse point, and in accordance with the distance, the smaller the distance, the smaller the distance. A map display device in which scrolling of a character size layer is omitted. 6. A display means for selecting one or a plurality of layers from a map having a layer structure stored in a memory and displaying the selected map on a display screen, and specifying a scroll destination by a mouse cursor on the display screen. Means, means for displaying a mark indicating the scroll direction on the display screen at the mouse cursor position or a related position obtained therefrom, means for scrolling a map to be displayed at the mouse cursor position or the related position, A map display device comprising: 7. A display means for selecting one or a plurality of layers for a map having a layer structure stored in a memory and displaying the selected map on a display screen, and specifying a scroll destination by a mouse cursor on the display screen. Means for displaying a mark indicating the scroll direction on the display screen at the mouse cursor position or a related position obtained therefrom; and displaying and displaying a map to be displayed at the mouse cursor position or the related position. A map display device comprising: scroll means for performing scrolling except for a layer having a small character size to be scrolled, as the distance between the reference position on the screen and the mouse cursor position or the related position increases.